When winter comes, the weather gets colder, and the roads get wet and slippery, making it hard to find a way to go out and exercise. This is a huge factor in why most Americans get roughly thirty minutes or less of physical activity. But some different people, like the ones who work for the military, are required to work out, even during the winter. Unlike others, they exercise no matter how cold it is, but for them, the cold doesn’t affect them as much.

Since they exercise every day, they get used to the cold. According to The New York Times, John Castellani, a physiologist in the U.S. Army Research Institute of Environmental Medicine in Massachusetts, said, “When we get that first bit of cold air, it feels awful, and then in March, you get that same temperature and it feels like it’s time to go play golf.” According to scientists, it is harder to keep going through the cold. In winter, exercise feels harder and causes dehydration, and it is more likely that you will bump into something. The New York Times explained, “It’s partly because your muscles don’t work well when they’re cold, meaning that you have to use more muscle fibers for longer to generate a given force.” But the cold is not the only reason people work out less; the equipment is also an important factor. Winter clothing and footwear are heavier, and there’s added friction between clothing layers. After, when it starts to get warmer, exercise gets easier. But even so, it is recommended to dress warmly, even if it is March.